Uninstalling WinXP & Win2k onboard defrag

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I've set this up at the 13mins install wia cmdlines.txt because windows file protection isn't active there yet.

installs.cmd (relevant part)

echo Uninstalling very controversial Onbrad Defrag...
regedit /s uninstdefrag.reg
del /q /f "%windir%\system32\dllcache\DfrgFat.exe"
del /q /f "%windir%\system32\dllcache\DfrgNtfs.exe"
del /q /f "%windir%\system32\dllcache\DfrgRes.dll"
del /q /f "%windir%\system32\dllcache\DfrgSnap.dll"
del /q /f "%windir%\system32\dllcache\DfrgUI.dll"
del /q /f "%windir%\system32\dllcache\Defrag.exe"
del /q /f "%windir%\system32\DfrgFat.exe"
del /q /f "%windir%\system32\DfrgNtfs.exe"
del /q /f "%windir%\system32\DfrgRes.dll"
del /q /f "%windir%\system32\DfrgSnap.dll"
del /q /f "%windir%\system32\DfrgUI.dll"
del /q /f "%windir%\system32\Defrag.exe"
del /q /f "%AllUsersProfile%\Start Menu\Programs\Accessories\System Tools\Disk Defragmenter.lnk"

uninstdefrag.reg

Windows Registry Editor Version 5.00

[-HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Setup\SourcePath]

[-HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Setup\InstallationSources]

[-HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Setup\ServicePackSourcePath]

[-HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\SourcePath]

[-HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Dfrg]

[-HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\MyComputer\DefragPath]

[-HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\MMC\NodeTypes\{476e6449-aaff-11d0-b944-00c04fd8d5b0}\Extensions\NameSpace]

[-HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\MMC\NodeTypes\{476e644a-aaff-11d0-b944-00c04fd8d5b0}\Extensions\ContextMenu]

[-HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\MMC\SnapIns\{43668E21-2636-11D1-A1CE-0080C88593A5}]

[-HKEY_CLASSES_ROOT\CLSID\{80EE4901-33A8-11d1-A213-0080C88593A5}]

[-HKEY_CLASSES_ROOT\CLSID\{80EE4902-33A8-11d1-A213-0080C88593A5}]

I've just tested this and it works. Only drawback: right clicking on a drive -> properties -> tools -> defragmentaion no longer has functionality and shows "no defragmentation program installed" (although O&O Defrag was installed afterwards). I suspect the DefragPath entry to be responsible for this.